Cameron Diaz and ALEX 'A-ROD' RODRIGUEZ fuelled speculation their relationship is firmly back on after spending America's Thanksgiving weekend (26-28Nov10) together on a sun-soaked vacation.The pair's romance, which reportedly began back in February (10), was rumoured to be in trouble last month (Oct10) when the Shrek star was pictured enjoying a night out with Glee's Matthew Morrison, while a subsequent report from America's Life & Style magazine suggested the relationship was over. However, Diaz and the sportsman were reportedly spotted enjoying each other's company during a trip on a luxury yacht in Miami Beach, Florida last week (23Nov10), lying next to each other and sunbathing and chatting on the deck. And their reported reconciliation continued over the Thanksgiving holiday - they were seen soaking up the sun in their swimwear in Mexico.